GFP protection for second source 705.32

coop3339

Senior Member
Location
NJ
Hi Everyone,

I have a question regarding the need for GFP on an additional source connected to the load side of a service main, protected by a required GFP breaker (705.32EX). If the second source is current limited to less than 1200A is it still required? The setting requirements are 1200A max and to trip within 1 SEC at 3000A and above (230.95). If the second source were power limited for example,at 400Amps, would it be necessary to include a GFP device on the feeder? Also, if still required, would a regular breaker with a trip curve meeting the required GFP settings cover this requirement. This has been an issue with PV inverters connecting to the load side of a GFP main, particularly in the case of cold sequenced gear. To be on the load side of the CT for net metering, with cold sequenced gear, the interconnection will have to be made on the load side of the main because it is ahead of the CTs.
 

Sahib

Senior Member
Location
India
Is your GFP breaker identified and listed for back feeding for load side connection of PV inverters?
 
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